OGS Monthly Newsletters 2016-Present

Includes Quarterly Journals 2008-2016

Jump to Quarterly Journals

Feb 2026 newsletter, Volume 36, Issue 6
Jan 2026 Newsletter, Volume 36, Issue 5
Dec 2025 Newsletter, Volume 36, Issue 4
Nov 2025 Newsletter, Volume 36, Issue 3
Oct 2025 Newsletter, Volume 36, Issue 2
Sep 2025 Newsletter, Volume 36, Issue 1
Jun 2025 Newsletter, Volume 35, Issue 10
May 2025 Newsletter, Volume 35, Issue 9
Apr 2025 Newsletter, Volume 35, Issue 8
Mar 2025 Newsletter, Volume 35, Issue 7
Feb 2025 Newsletter, Volume 35, Issue 6
Jan 2025 Newsletter, Volume 35, Issue 5
Dec 2024 Newsletter, Volume 35, Issue 4
Nov 2024 Newsletter, Volume 35, Issue 3
Oct 2024 Newsletter, Volume 35, Issue 2
Sep 2024 Newsletter, Volume 35, Issue 1
Jun 2024 Newsletter, Volume 34, Issue 10
May 2024 Newsletter, Volume 34, Issue 9
Apr 2024 Newsletter, Volume 34, Issue 8
Mar 2024 Newsletter, Volume 34, Issue 7
Feb 2024 Newsletter, Volume 34, Issue 6
Jan 2024 Newsletter, Volume 34, Issue 5
Dec 2023 Newsletter, Volume 34, Issue 4
Nov 2023 Newsletter, Volume 34, Issue 3
Oct 2023 Newsletter, Volume 34, Issue 2
Sep 2023 Newsletter, Volume 34, Issue 1
Jun 2023 Newsletter, Volume 33, Issue 10
May 2023 Newsletter, Volume 33, Issue 9
Apr 2023 Newsletter, Volume 33, Issue 8
Mar 2023 Newsletter, Volume 33, Issue 7
Feb 2023 Newsletter, Volume 33, Issue 6
Jan 2023 Newsletter, Volume 33, Issue 5
Dec 2022 Newsletter, Volume 33, Issue 4
Nov 2022 Newsletter, Volume 33, Issue 3
Oct 2022 Newsletter, Volume 33, Issue 2
Sep 2022 Newsletter, Volume 33, Issue 1
Jun 2022 Newsletter, Volume 32, Issue 10
May 2022 Newsletter, Volume 32, Issue 9
Apr 2022 Newsletter, Volume 32, Issue 8
Mar 2022 Newsletter, Volume 32, Issue 7
Feb 2022 Newsletter, Volume 32, Issue 6
Jan 2022 Newsletter, Volume 32, Issue 5
Dec 2021 Newsletter, Volume 32, Issue 4
Nov 2021 Newsletter, Volume 32, Issue 3
Oct 2021 Newsletter, Volume 32, Issue 2
Sep 2021 Newsletter, Volume 32, Issue 1
Jun 2021 Newsletter, Volume 31, Issue 10
May 2021 Newsletter, Volume 31, Issue 9
Apr 2021 Newsletter, Volume 31, Issue 8
Mar 2021 Newsletter, Volume 31, Issue 7
Feb 2021 Newsletter, Volume 31, Issue 6
Jan 2021 Newsletter, Volume 31, Issue 5
Dec 2020 Newsletter, Volume 31, Issue 4
Nov 2020 Newsletter, Volume 31, Issue 3
Oct 2020 Newsletter, Volume 31, Issue 2
Sep 2020 Newsletter, Volume 31, Issue 1
Jun 2020 Newsletter, Volume 30, Issue 10
May 2020 Newsletter, Volume 30, Issue 9
Apr 2020 Newsletter, Volume 30, Issue 8
Mar 2020 Newsletter, Volume 30, Issue 7
Feb 2020 Newsletter, Volume 30, Issue 6
Jan 2020 Newsletter, Volume 30, Issue 5
Dec 2019 Newsletter, Volume 30, Issue 4
Nov 2019 Newsletter, Volume 30, Issue 3
Oct 2019 Newsletter, Volume 30, Issue 2
Sep 2019 Newsletter, Volume 30, Issue 1
Jun 2019 Newsletter, Volume 29, Issue 10
May 2019 Newsletter, Volume 29, Issue 9
Apr 2019 Newsletter, Volume 29, Issue 8
Mar 2019 Newsletter, Volume 29, Issue 7
Feb 2019 Newsletter, Volume 29, Issue 6
Jan 2019 Newsletter, Volume 29, Issue 5
Dec 2018 Newsletter, Volume 29, Issue 4
Nov 2018 Newsletter, Volume 29, Issue 3
Oct 2018 Newsletter, Volume 29, Issue 2
Sep 2018 Newsletter, Volume 29, Issue 1
Jun 2018 Newsletter, Volume 28, Issue 10
May 2018 Newsletter, Volume 28, Issue 9
Apr 2018 Newsletter, Volume 28, Issue 8
Mar 2018 Newsletter, Volume 28, Issue 7
Feb 2018 Newsletter, Volume 28, Issue 6
Jan 2018 Newsletter, Volume 28, Issue 5
Dec 2017 Newsletter, Volume 28, Issue 4
Nov 2017 Newsletter, Volume 28, Issue 3
Oct 2017 Newsletter, Volume 28, Issue 2
Sep 2017 Newsletter, Volume 28, Issue 1
Jun 2017 Newsletter, Volume 27, Issue 10
May 2017 Newsletter, Volume 27, Issue 9
Apr 2017 Newsletter, Volume 27, Issue 8
Mar 2017 Newsletter, Volume 27, Issue 7
Feb 2017 Newsletter, Volume 27, Issue 6
Jan 2017 Newsletter, Volume 27, Issue 5
Dec 2016 Newsletter, Volume 27, Issue 4
Nov 2016 Newsletter, Volume 27, Issue 3
Oct 2016 Newsletter, Volume 27, Issue 2
Sep 2016 Newsletter, Volume 27, Issue 1
Jun 2016 Newsletter, Volume 26, Issue 10
May 2016 Newsletter, Volume 26, Issue 9
Apr 2016 Newsletter, Volume 26, Issue 8
Mar 2016 Newsletter, Volume 26, Issue 7
Feb 2016 Newsletter, Volume 26, Issue 6
Jan 2016 Newsletter, Volume 26, Issue 5

OGS Quarterly Journals

Quarterly Journals began in Jan 1975. Editions prior to 2008 to be added later.

Jan 2016 Quarterly Journal, Volume 42, Issue 1
Apr 2015 Quarterly Journal, Volume 41, Issue 2
Jan 2015 Quarterly Journal, Volume 41, Issue 1
Oct 2014 Quarterly Journal, Volume 40, Issue 4
Jul 2014 Quarterly Journal, Volume 40, Issue 3
Apr 2014 Quarterly Journal, Volume 40, Issue 2
Jan 2014 Quarterly Journal, Volume 40, Issue 1
Oct 2013 Quarterly Journal, Volume 39, Issue 4
Jul 2013 Quarterly Journal, Volume 39, Issue 3
Apr 2013 Quarterly Journal, Volume 39, Issue 2
Jan 2013 Quarterly Journal, Volume 39, Issue 1
Oct 2012 Quarterly Journal, Volume 38, Issue 4
Jul 2012 Quarterly Journal, Volume 38, Issue 3
Apr 2012 Quarterly Journal, Volume 38, Issue 2
Jan 2012 Quarterly Journal, Volume 38, Issue 1
Oct 2011 Quarterly Journal, Volume 37, Issue 4
Jul 2011 Quarterly Journal, Volume 37, Issue 3
Apr 2011 Quarterly Journal, Volume 37, Issue 2
Jan 2011 Quarterly Journal, Volume 37, Issue 1
Oct 2010 Quarterly Journal, Volume 36, Issue 4
Jul 2010 Quarterly Journal, Volume 36, Issue 3
Apr 2010 Quarterly Journal, Volume 36, Issue 2
Jan 2010 Quarterly Journal, Volume 36, Issue 1
Oct 2009 Quarterly Journal, Volume 35, Issue 4
Jul 2009 Quarterly Journal, Volume 35, Issue 3
Apr 2009 Quarterly Journal, Volume 35, Issue 2
Jan 2009 Quarterly Journal, Volume 35, Issue 1
Oct 2008 Quarterly Journal, Volume 34, Issue 4